41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
//@aux-build:proc_macro_derive.rs
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#![warn(clippy::ignored_unit_patterns)]
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#![allow(clippy::let_unit_value, clippy::redundant_pattern_matching, clippy::single_match)]
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fn foo() -> Result<(), ()> {
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unimplemented!()
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}
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fn main() {
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match foo() {
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Ok(()) => {}, //~ ERROR: matching over `()` is more explicit
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Err(()) => {}, //~ ERROR: matching over `()` is more explicit
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}
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if let Ok(()) = foo() {}
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//~^ ERROR: matching over `()` is more explicit
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let _ = foo().map_err(|()| todo!());
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//~^ ERROR: matching over `()` is more explicit
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println!(
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"{:?}",
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match foo() {
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Ok(()) => {},
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//~^ ERROR: matching over `()` is more explicit
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Err(()) => {},
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//~^ ERROR: matching over `()` is more explicit
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}
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);
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}
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// ignored_unit_patterns in derive macro should be ok
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#[derive(proc_macro_derive::StructIgnoredUnitPattern)]
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pub struct B;
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#[allow(unused)]
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pub fn moo(_: ()) {
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let () = foo().unwrap();
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//~^ ERROR: matching over `()` is more explicit
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let _: () = foo().unwrap();
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let _: () = ();
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}
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